Am I missing a lot of value by not leading rivers like these, or is this just a good way of getting to a cheaper, safer showdown? Villian in this case is fairly laggy. Here I had a fairly strong hand, but decided I'd check/call in case he had the boat or caught a straight.

Party Poker No-Limit Hold'em, $ Hero (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Button ($26.25)
SB ($40.23)
Hero ($50.85)
UTG ($21.55)
UTG+1 ($78)
MP1 ($50.50)
MP2 ($46.99)
MP3 ($89.60)
CO ($49.25)

Preflop: Hero is BB with Q, A. SB posts a blind of $0.25.
1 fold, UTG+1 raises to $1.25, 2 folds, MP3 calls $1.25, 3 folds, Hero calls $0.75.

Flop: ($4) T, Q, 3 (3 players)
Hero checks, UTG+1 bets $3, MP3 folds, Hero raises to $9, UTG+1 calls $6.

Turn: ($22) Q (2 players)
Hero bets $15, UTG+1 calls $15.

River: ($52) J (2 players)
Hero checks, UTG+1 checks.

Final Pot: $52